Stopping mechanism for swivel-looms



(No Model.)

W. -J. LUTTON.

STOPPING MECHANISM FOR SWIVEL LOOMS.

No. 461,584. Patented Oct. 20, 1891.

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Uivrrnn :STATES- ATE-NT WILLIAM J. LUTTON, OF PATERSON, NEIV JERSEY.

SPECIFICATION forming part of Letters Patent No. 461,584, dated October20, 1891.

Application filed October 9, 1890. Serial No. 367,503. (No model.)

To aZZ whom it may concern:

Be it known that I, IVILLIAM J. LUTTON, of Paterson, in the county ofPassaic and State of New Jersey, have invented a new and usefulImprovement in Stopping Mechanisms for Swivel-Looms, of which thefollowing is a specification.

My invention relates to an improvement in safety attachments for looms,and more particularly to mechanism for stopping the operation of a loomin which swivel-shuttles are employed upon the failure of the shuttlesto complete their stroke in either direction.

A practical embodiment of myinventiou is represented in the accompanyingdrawings, in which-- Figure 1 represents a portion of aloom embodying myinvention in front elevation, the breastbeam and portion of the mainframe being removed. Fig. 2 is a partial end elevation showing the layand mechanism attached thereto in transverse section through line 00 0cof Fig. 1. Fig. 3 is a top plan view of the swivel-shuttle beam, aportion of the arm for operating the swivel-shuttles being removed; andFig. at is a partial side view of the swivel'shuttle beam, broken awayto show the swivel-shuttle-operating bar.

The loom, portions of which I have represented in the accompanyingdrawings for the purpose of illustrating my invention, is of thedrop-box type and is provided with swivelshuttle mechanism supportedupon the dropboxes and adapted to rise and fall therewith, so as to bebrought into operation when the drop-boxes at the side are dropping outof operative position.

A represents the loom-frame; B,the breastbeam; C, the shipper-levershaft, having connected with it any ordinary beltshifting mechanism, andalso a handle, by which said mechanism may be operated by hand.

D represents theknock-off lever, rigidly secured to a rock-shaft d andprovided with a notchd to receive the thrust of a dagger E. There isalso acam d secured to the rockshaft d, which bears upon an arm F,secured to the rock-shaft O, in order to operate the belt-shipper shaftwhen the dagger strikes the said notch 62. The several operative partsfor shifting the belt which I have enumerated are well known in the artand are illustrated in Letters Patent No. 376,776, granted to L. J.Knowles January 2%, 1888.

Thedagger or daggers E are fixed upon a rock-shaft G, journaled insuitable bearings g, attached to the lay H. is provided at its oppositeends with arms g, fixed thereto, the free ends of said arms extendingupwardly opposite the free ends of The rock-shaft G the spring-actuatedcovers 2' of the d rop-boxes I. The position of the arms g with relationto the drop-box covers is such that the covers of the set of drop-boxesin use will swing against them as the shuttle enters the box, therebyrocking the shaft G, and hence the dagger E, so that it will not engagethe notch din the knock-off lever D as the lay swings forwardly.

When the swivel-shuttle mechanism is su pported upon the drop-boxes torise and fall therewith, as represented in the accompanying drawings,the upper set of drop-boxes at the side will be thrown out of use forpurposes of receiving shuttles. a series of swivelshuttles beingarranged to take their placein the operation of weaving.

The swivel-shuttle mechanism which I have 4 chosen for the purpose ofillustrating my stop mechanismis quite similar to thatshown anddescribed in my pending application, Serial No. 365,252, filed September1.7, 1890, and need swivel-shuttle beam L. My present i-nventioncomprises means whereby the back-andforth movement of the rack-bar whichdrives the swivel-shuttles will serve to rock the dagger into a positionwhich will clear the beltshifting mechanism so long as theswivelshuttles complete their stroke, but which will, upon the failureof said shuttles to complete their stroke, fail to so rock the dagger,and will thereby setin operation the belt-shifting mechanism to stop theloom.

A pair of'sliding rods M and M are secured to the swivel-shuttle beamand are subject toa limited sliding movement under the impulse oftheswivel-shuttle-operating bar. In

the present instance-I have shown them in in lieu of the arm K to suitvarious structures or arrangements of the swivel-sh little-operatingbar. The adjacent ends on and m of the sliding rods are here shown asprovided with cross-heads, which, when the rods are in their normalpositions, project a short distance over the ends of the path which armK traverses. In Fig. 3 the end 972' of the rod M is shown in such normalposition, while the end m of the rod M is shown as forced back by theengagement of the arm K therewith. At their opposite ends the rods M andM are connected with the end of an arm n of a double crank N, secured tothe side of the beam L, so as to rock the said double crank, forming ineffect a rockinglever. The other armn of the double crank is providedwith a pin aawhioh, when the said crank N is rocked in one direction,will engage the spring-actuated cover 2' of the upperdrop-box and forceitoutwardly against the arm g, and thereby throw the dagger, ashereinbefore stated, into a position to clear the belt-shiftingmechanism. The said double crank is rocked back when the operating-rod Mor M is released by means of the pressure of the spring-actuated cover2' tending to return to its closed position. Such movement of the doublecrank N serves to set the operating-rod M or M into position to beengaged by the arm K. From this construction and arran gement it followsthatwhen the arm K completes its stroke in either direction, and hencewhen the swivel-shuttles complete theirstroke in either direction, thedagger E will be thrown so as to clear the belt-shifting mechanism; butif the arm K, and hence the swivel-shuttles, fail to complete theirstroke in either direction the crank N will not be rocked suificientlyto throw the spring-actuated cover i into engagement with the arm g torock the dagger clear of the belt-shifting mechanism, and it willtherefore engage such mechanism and the loom may be stopped.

In orderto prevent the swivel'shuttles from displacement, either underthe tension of the spring-actuated cover t or from other cause, afterthe arm K has completed its stroke and before it is positively forced inthe opposite direction, I provide a spring 0, the central portion 0 ofwhich is adapted to rest normally across the path of the arm K, butwhich will readily recede when the arm K is intentionally forced fromone end of its stroke to the other.

What I claim as my invention is- 1. The combination, with swivelmechanism and mechanism for stopping the operation of a loom, of asliding rod intermediate of the swivel-shLittle-operating bar and themechanism for stopping the loom, said sliding rod being subject to theimpulse of the swivel-shut: tle-operating bar to prevent the stopping otloom when the shuttles complete their stroke, substantially as setforth. V

2. The combination, with the bar for operating the swivel-shuttles and arocking arm adapted to set in motion the 1oom-stopp1ng mechanism, of asliding rod subject to the impulse of the swivel-shuttle-operating bar,a rocking lever, and connections intermediate the rocking lever androcking arm for communicatiug the movement of the sliding rod to thesaid rocking arm to prevent the stopping of theloom when theswivel-shuttles complete their stroke, substantially as set forth.

The combination, with the swivel-sh uttle beam, the bar for operatingthe swivel-shuttles, and rocking arms for setting in motion the loomstopping mechanism, the swivelshuttle-operating bar being provided withan arm fixed thereto, of sliding rods secured to the swivcl-shuttle beamin position to engage the arm on the operating-bar at the opposite endsof its stroke, spring-actuated drop-box covers, connections intermediatethe springactuated covers, and the rocking arms and cranks connectedwith the opposite ends of the rods in position to operate thespring-actuated covers to prevent the stopping of the loom when theswivel-shuttles complete their stroke, substantially as set forth.

4. The combination,with the swivel-shu ttleoperating bar, its support,and the devices for communicating the motions of the bar to aloom-stopping mechanism, of a springadapted to hold theswivel-shuttle-operating bar at the limits of its stroke in eitherdirection against unintentional displacement, substantially as setforth.

WILLIAM J. LUTTON. Witnesses:

SAMUEL .T. LAWRENCE, I. GARELLY.

